Leif Erikson, Norse explorer, predated Columbus by centuries.
Discovered Vinland, first European settlement in North America.
Used astrolabe, sun compass for skilled navigation.
Overlooked in U.S. history due to Anglo-Saxon focus.
Vinland's location remains a mystery, subject of debate.
Leif Erikson Day honors his pioneering exploration.
Recognize Erikson's role in shaping history and exploration.